Physics > Electrostatics And Current Electricity > Current Electricity

Estimate the average drift speed of conduction electrons in a copper wire of cross-sectional area $2.5 \times 10^{-7} \text{ m}^2$ carrying a current of 2.7 A. Assume the density of conduction electrons to be $9 \times 10^{28} \text{ m}^{-3}$.